Apparatus for applying lubricants to yarn



JuneZZ, 1937. J. B. JOHNSON ET AL 5 3 APPARATUS FOR APPLYING LUBRICANTS TO YARN Filed April 10, 1955 FlTGOHO INVENTORS ATTORNEYS roller.

vide a simple lubricant applying roller, the me- Patented June 22, 1937 PA'rEnroFFrcE APPARATUS FOR APPLYING LUBRICANTS TO YARN Joseph B. Johnson, and Leslie-L. Cobb, Kingsport, Tenn., assignors to Eastman Kodak Com- I pany, Rochester, N. Y., a corporation of New Jersey Application April 10, 1935, Serial No. 15,731

1 Claim.

This invention relates to apparatus for 'processing textile yarns and particularly to apparatus for applying lubricants, emulsions of oil, tinting oils, etc, to yarns by means of a rotating Oneobject of our invention is to protallic surface of which will convey the proper amount of lubricant to yarn passing over the surface of the roller. Another object of our invention is to provide a roller having a surface slightly deformed from a normal cylindrical shape by means of minute "unpolished irregularities in the surface of the cylinder,

these irregularities being adapted to convey a uniform quantity of lubricant to yarn passing Still other objects will appear over the roller. from the following specification, the novel features being particularly pointed out in the claim at the end thereof.

It is common practice to apply lubricants,

such as emulsions of ,oil, tinting oils, etc.,' to

sufficient liquid from the trough bringing the yarn into contact with the fabric. caused troublesome defects in the yarn, since the fabric seems to cause the yarn to break and become fuzzy and the fabric does not apply a as uniform quantity of the lubricant to the yarn.

50 sufiicient lubricant to the yarn.

As the yarn is quite delicate at the point where lubricants are ordinarily applied, the rollers in use have been provided with smooth or polished surfaces since it has been thought that such a surface would be necessary to prevent damaging the yarn.

We have found, however, that a metallic roller can be used satisfactorily for applying ing the troublesome fabric coverings, which have the defects above mentioned and eliminating the defects due .to using the known type of smooth surfaced rollers-that of conveying in- We have; substituted for the usual smooth surface of the roller a surface in which the usual cylindrical shape has been slightly deformed by means of a plurality of minute un- 55 polished irregularities in the surface, these ir- 'it passes over the roller.

This has lubricants directly to the yarn thus 'eliminatregularities being sufficiently smooth to contact with the yarn without damaging it and being sufficiently rough to cause a larger quantity of emulsions to cling to its surface andto pass to yarn movingover the roller.

Coming now to the drawing wherein I like reference characters designate like parts throughout,

Fig. 1 is a diagrammatic part side elevation and part section of a lubricant applying apparatus including a roller constructed in accordance with'a'nd embodying a preferred form of our invention.

Fig. 2 is an enlarged side elevation of a roller constructed in accordance with our invention.

Fig. 3 is a greatly enlarged sectional view on line 33 of Fig. 2. w

As shown in Fig. 1, the yarn I may pass downwardly through a spinning cabinet 2' in which there is a guide roller 3 over which the yarn passes. The yarn may pass from the spinning cabinet through an opening 4 over a lubricant.

applying roller 5, over a guide roller 6 and it may be finally wound upon' a bobbin 1 in the usual manner after passing through a guide 8.

"The roller 5 may be supported in a tank 9 in which the surface of a lubricant I0 is at such a level that the roller surface H will be immersedso that a layer of the lubricant may be carried by the roller ll tothe thread I as Itshould be understood that we do not confine ourselves to applying the lubricant to the yarn at this point, but since it is customary to lubricate the yarn as it passes from the spinning cabinet, we have selectedthis as a preferred embodiment of our invention. It is also to be understood that in the specification and claims where we refer to lubricant we mean to include any emulsions, oils, tinting solutions, tinting oils or other'fiuids which are to be conveyed or applied to yarn.

In accordance with our invention, the roller 5 may consist of a tubular member I5 having trunnions H5 at the ends thereof, these trunnions being supported by annular members I'I,.

been found to convey a satisfactory the surface of the cylinder may be madein a variety of ways, but We 'find that the followingmethods have proved the most satisfactory. After the surface of the cylinder has been trued up, smoothed or polished, the surface may be slightly deformed by rubbing with fine emory cloth or sandpaper. This makes a series of fine slightly roughened indentations which have lubricant to yarn. g V

We have found that sand-blasting the smooth surface of a roller is .a satisfactory way of slightly deforming its cylindrical surface. We particularly desire to make the deformations in the cylindrical surface so slight that the cylindrical surface will run true and yet roughen the surface suficiently to cause the roller to pick up and carry with it the desired quantity of lubricant. Considerable care must, of course, be used in providing a roller which must contact with the delicate yarn, since the yarn speed is frequently to times faster than the speed of the rotating roller which applies lubricant to it. Thus, any very material irregularity in the surface of the roller can very readily damage the yarn, although we have found that with a roller roughened or deformed layer of as described above, entirely satisfactory results can be obtained.

Moreover, since the amount of lubricant conveyed to the yarn does not depend on the variable absorption of a fabric covering, but on a uniformly deformed or slightly roughened cylindrical surface, rollers constructed in accordance with our invention can be relied upon to always convey the same quantity 'of lubricant to the yarn; It is, therefore, only necessary to hold the lubricant at a constant viscosity in order to produce a perfectly uniform product.

Having thus described our invention, what i we declare is new and desire to secure by Letters Patent of the United States is:

An apparatus for applying lubricants and the 'like to textile yarns including yarn guides, a

roller over which the yarn may pass, means for supplying a lubricant to'the roller, said roller 29 including a true cylindrical surface slightly deformed over all of said surface by sand blasting and adapted to convey lubricant to yarn passing thereover, the deformed surface entire] covering the surface of the cylinder. JOSEPH B. JOHNSON. LESLIE L, COBB. 

